[refactor] add docker and docker compose setup and changed database e…

…nviroment variable

.env.example

@@ -1,4 +1,4 @@
-MONGODB_URI=mongodb://localhost:27017/graphqlTodo
+DATABASE_URI=mongodb://localhost:27017/graphql
 
 SESSION_SECRET=Your-Session-Secret-Goes-Here
 

Dockerfile

@@ -0,0 +1,8 @@
+FROM node:8.11.1-alpine
+
+WORKDIR /usr/app
+
+COPY package.json .
+RUN npm install -g -s --no-progress yarn && yarn
+
+COPY . .

docker-compose.yml

@@ -0,0 +1,18 @@
+version: '2'
+services:
+  web:
+    build: .
+    command: sh -c './wait-for.sh mongodb:27017 && yarn start'
+    volumes:
+      - .:/usr/app/
+      - /usr/app/node_modules
+    ports:
+      - '8000:8000'
+    depends_on:
+      - mongodb
+    environment:
+      DATABASE_URI: mongodb://mongodb:27017/graphql
+  mongodb:
+    image: mongo:3.6.4-jessie
+    ports:
+      - '27017:27017'

src/config/config.js

@@ -1,12 +1,12 @@
 const RateLimit = require('express-rate-limit');
 
 const {
-  NODE_ENV, MONGODB_URI, SESSION_SECRET, PORT
+  NODE_ENV, DATABASE_URI, SESSION_SECRET, PORT
 } = process.env;
 
 const CONFIG = {
   SESSION_SECRET,
-  MONGODB_URI,
+  DATABASE_URI,
   limiter: new RateLimit({
     windowMs: 15 * 60 * 1000, // 1 minute
     max: 100, // limit each IP to 100 requests per windowMs

src/index.js

@@ -13,7 +13,7 @@ const config = require('./config/config');
 mongoose.Promise = global.Promise;
 
 // Set up default mongoose connection
-mongoose.connect(config.MONGODB_URI, {
+mongoose.connect(config.DATABASE_URI, {
   useMongoClient: true
 });
 

wait-for.sh

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+# Credit: https://github.com/vnegrisolo/wait-for
+
+
+log() {
+  echo "[wait-for] [`date +'%Y%m%d%H%M%S'`] $@"
+}
+
+usage() {
+  echo "Usage: `basename "$0"` [--timeout=15] <HOST>:<PORT> [<HOST_2>:<PORT_2>]"
+}
+
+unknown_arg() {
+  log "[ERROR] unknown argument: '$@'"
+  usage
+  exit 2
+}
+
+wait_for() {
+  timeout=$1 && host=$2 && port=$3
+  log "wait '$host':'$port' up to '$timeout'"
+  for i in `seq $timeout` ; do
+    if nc -z "$host" "$port" > /dev/null 2>&1 ; then
+      log "wait finish '$host:$port' [`expr $(date +%s) - $START`] seconds"
+      exit 0
+    fi
+    log "wait attempt '${host}:${port}' [$i]"
+    sleep 1
+  done
+  log "[ERROR] wait timeout of '$timeout' on '$host:$port'"
+  exit 1
+}
+
+trap 'kill $(jobs -p) &>/dev/null' EXIT
+
+START=$(date +%s)
+timeout=15
+pids=""
+for i in $@ ; do
+  case $i in
+    --timeout=*) timeout="${i#*=}" ;;
+    -t=*) timeout="${i#*=}" ;;
+    *:* )
+      wait_for "$timeout" "${i%%:*}" "${i##*:}" &
+      pids="$pids $!"
+    ;;
+    *) unknown_arg "$i" ;;
+  esac
+done
+
+status=0
+for pid in $pids; do
+  if ! wait $pid ; then
+    status=1
+  fi
+done
+
+log "wait done with status=$status"
+exit $status